import axios from "axios";
import { ElLoading, ElMessage, ElNotification } from "element-plus";
import { getToken, removeToken } from "@/utils/auth";
import errorCode from "@/utils/errorCode";
import { blobValidate, tansParams } from "@/utils/common";
import cache from "@/plugins/cache";
import { saveAs } from "file-saver";
import { ElMessageBox } from "element-plus";
import { useRoute, useRouter } from "vue-router"
import Vrouter from "@/router"


import { showLoading, hideLoading } from "./loading";

let downloadLoadingInstance;
// 是否显示重新登录
export let isRelogin = { show: false };

axios.defaults.headers["Content-Type"] = "application/json;charset=utf-8";
// 创建axios实例
const service = axios.create({
  // axios中请求配置有baseURL选项，表示请求URL公共部分
  baseURL: import.meta.env.VITE_APP_BASE_API,
  // 超时
  timeout: 30000,
});

const gmFlag = true;

// request拦截器
service.interceptors.request.use(
  (config) => {
    if(!config.noLoading){
      showLoading();
    }
    // 是否需要设置 token
    const isToken = (config.headers || {}).isToken === false;
    // 是否需要防止数据重复提交
    const isRepeatSubmit = (config.headers || {}).repeatSubmit === false;
    // get请求映射params参数
    if (config.method === "get" && config.params) {
      let url = config.url + "?" + tansParams(config.params);
      url = url.slice(0, -1);
      config.params = {};
      config.url = url;
    }
    if (
      !isRepeatSubmit &&
      (config.method === "post" || config.method === "put")
    ) {
      // if(isEmpty(config.data)){
      // 	let tempData = {};
      // 	tempData.encryTimesTamp = parseInt(new Date().getTime() / 1000) + "";
      // 	config.data = tempData
      // }else{
      // 	config.data.encryTimesTamp = parseInt(new Date().getTime() / 1000) + "";
      // }
      // if (gmFlag && !isEmpty(config.data)) {
      //     const gmStr = gm4().encrypt(typeof config.data === 'object' ? JSON.stringify(config.data) : config.data);
      //     const gmParams = {
      //         params: gmStr
      //     }
      //     config.data = gmParams;
      // }
      const requestObj = {
        url: config.url,
        data:
          typeof config.data === "object"
            ? JSON.stringify(config.data)
            : config.data,
        time: new Date().getTime(),
      };
      const sessionObj = cache.session.getJSON("sessionObj");
      if (
        sessionObj === undefined ||
        sessionObj === null ||
        sessionObj === ""
      ) {
        cache.session.setJSON("sessionObj", requestObj);
      } else {
        const s_url = sessionObj.url; // 请求地址
        const s_data = sessionObj.data; // 请求数据
        const s_time = sessionObj.time; // 请求时间
        const interval = 100; // 间隔时间(ms)，小于此时间视为重复提交
        if (
          s_data === requestObj.data &&
          requestObj.time - s_time < interval &&
          s_url === requestObj.url
        ) {
          const message = "数据正在处理，请勿重复提交";
          console.warn(`[${s_url}]: ` + message);
          return Promise.reject(new Error(message));
        } else {
          cache.session.setJSON("sessionObj", requestObj);
        }
      }
    }
    return config;
  },
  (error) => {
    console.log("request", error);
    hideLoading();
    Promise.reject(error);
  }
);

// 响应拦截器
service.interceptors.response.use(
  (res) => {
    if(!res.config.noLoading){
       hideLoading();
    }
    // 未设置状态码则默认成功状态
    const code = res.data.code || 200;
    // 获取错误信息
    const msg = errorCode[code] || res.data.msg || errorCode["default"];
    // 二进制数据则直接返回
    if (
      res.request.responseType === "blob" ||
      res.request.responseType === "arraybuffer"
    ) {
      return res.data;
    }
    if (code === 401 || code === 403) {
      if (!isRelogin.show) {
        isRelogin.show = true;
        ElMessageBox.confirm('登录状态已过期，您可以继续留在该页面，或者重新登录', '系统提示', {
          confirmButtonText: '重新登录',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {
          isRelogin.show = false;
          removeToken()
          location.href = '/register?type=1&redirectUrl=' + encodeURIComponent(Vrouter.currentRoute.value.fullPath);
        }).catch(() => {
          isRelogin.show = false;
        });
      }
      // return Promise.reject("无效的会话，或者会话已过期，请重新登录。");
    } else if (code === 500) {
      ElMessage({
        message: res.data.message || msg,
        type: "error",
      });
      return Promise.reject(new Error(msg));
    } else if (code === 201) {
      return Promise.resolve(res.data);
    } else if (code !== 200) {
      ElNotification.error({
        title: msg,
      });
      return Promise.reject("error");
    } else {
      return Promise.resolve(res.data);
    }
  },
  (error) => {
    console.log("err:" + error);
    hideLoading();
    let isShowMessage = true;
    let { message } = error;
    if (message == "Network Error") {
      message = "后端接口连接异常";
    } else if (message.includes("timeout")) {
      hideLoading();
      message = "系统接口请求超时";
    } else if (message.includes("Request failed with status code")) {
      message = "系统接口" + message.substr(message.length - 3) + "异常";
    } else if (message == "数据正在处理，请勿重复提交") {
      isShowMessage = false;
    }
    if (isShowMessage) {
      ElMessage({
        message: message,
        type: "error",
        duration: 5 * 1000,
      });
    }
    return Promise.reject(error);
  }
);

// 通用下载方法
export function download(url, params, filename, config) {
  downloadLoadingInstance = ElLoading.service({
    text: "正在下载数据，请稍候",
    background: "rgba(0, 0, 0, 0.7)",
  });
  return service
    .post(url, params, {
      transformRequest: [
        (params) => {
          return tansParams(params);
        },
      ],
      headers: { "Content-Type": "application/x-www-form-urlencoded" },
      responseType: "blob",
      ...config,
    })
    .then(async (data) => {
      const isLogin = await blobValidate(data);
      if (isLogin) {
        const blob = new Blob([data]);
        saveAs(blob, filename);
      } else {
        const resText = await data.text();
        const rspObj = JSON.parse(resText);
        const errMsg =
          errorCode[rspObj.code] || rspObj.msg || errorCode["default"];
        ElMessage.error(errMsg);
      }
      downloadLoadingInstance.close();
    })
    .catch((r) => {
      console.error(r);
      ElMessage.error("下载文件出现错误，请联系管理员！");
      downloadLoadingInstance.close();
    });
}

export default service;
